Rotary bake-oven.



No: 7o7,|87. Patented Aug. I9, |902.

F. H. vAN Houma-N.V

(Application led Oct. 10, 1901.) (No Modell) .3 Shelaets-Sheetv' l. oq Nw l! l Il v wh/@osea ma noina. BUSH?. co. vrmrolumo, wxsnmmnn, b. c,

F. H. VAN HOUTEN.

BUTABY BAKE OVEN.

( Appumiun med oec. 1o, 1901.)

Patented Aug. I9, i902.

(Ilo Model.)

3 Sheets-Sheet 2.

nwn/cofo No. 70u37. Patented Aug. 19, |902.

F. H. v'AVN Hounzn.` ROTARY BAKE OVEN.

(Applicdzitzlnl filed Oct. 10, 1901.)

(No Model.) 3 Sheets-Sheet 3.

AcoRPoRnTron oF'nEwroRK.

f y i y.To DUTCHEss TOOL'COMPANY,oFFIsHKrLLfoNfrHE-HUDsoN,'NEW YORK,y

sPEcIF'IoATIoltfoiningioartorLetters Patent No.'.77,f1`8 7,1a .tu August1a-local,

To all whom/t ritalyicoz'rogrn;

1, Be it known that `I,FRANK'H.VANHOUTEN', y c a citizen' oftheUnited,States,residing at Fishl kill-on-thefHudson,A inf the. county of`Dutchv ess, State of New York,'ha`ve invented certain' new and usefulImprovements inRota-ryBake- Ovens; and I` do herebydeclare the followingto be a full, clear, and yexact description of the same,l referencebeinghadtothe accom-u yIolpanyingy drawings, for-minga 'part of fthis lspeciication, andi-tov theletters of A reference un'Ymarkedthereon.` l;

bake-ovens, and particularly, though not exf1.5 vclusively, to.'that'type ofvovendesig'ned for y VbakinglVienna bread, the objectsofthe inf" l vention being to provide "an ezc'eedifnglysim ,l pleeasily-operatedlrotary oven in .which the J j proper, such asY`is'.neces'saryl for"bakingVi The invention consists `in certain novelde` vtailsqof constructionand lcombinations and f `arrangements ofparts, `all as will be nowdeg j scribed, and rpointed out particularlythe ,-ofappended'claims. nel .y y u y f lleferringto the accompanyingd,ifawingggn Figure -1 is a Vertical'section vtaken through r an* ovenembodying the "presenti,improvements. `Fig.isahorizontalsectionlthroughv v hebake chamberior,ovenfproperDdlooking downwardly on -theto'p of therotary hearth. l Fig 3 `is a horizontalfsection. through thel l lLikeletters ofreferencesin the several 44o uresindicate-the same-parts.

The leiter n indiearesthe weno-r troeven,

f vpreferably made'of brickworl; or masonryy and either circular inhorizontalr section,'as indicatedin Fig. 2,* or with acircular interiorvconformation forming circular chambers, in4 one of Which-to Wit, thebake-chamberf-may be mounteda'rotary hearthB. 'The wallAentendsrupwardly at `the center `inthe form a circularwell A'rat the topofp'which a' relatively large bearingor track' A? isl mount-V f *1`FRANK H. yAN iournm'on FIsriKrLLloN-rH-HUDson, nEwYoKgi/issonoa u ed,lsaid beari'ng'ortrackbeingadaptedto` receive a hub 5B', couS'bi/t'utingazportion ot `the hearth structure., `-`1lnth` preferred'c'ony structionthe `bearing A? is: mounted in an inclined'positiom the'inclinationffbeing from thefront 'upwardly'towardfytheloack of the oven,anduthe:bearingfsurfaces0111,'the'trackiL and vhub are' fmade in thefo'rm V of'. raceways vforvballsb, whichwill constitutea-n a-ntifric--ytion-bearing andfatfthea'samejtime-prevent ,the lateral displacementofth'eghearth'; 'The y circular chamberfin which` "the hearth is'mountedh and which cor'lstitutes vthevowefn properl is closed atthebottomv byacircularg arch C, `constituti'ng. the topfor upper Wallofacircular flue D, which yinclinesjupwardly 'from the front r1.0thebackio'f theoven,y said; circular ueat"the:frontdopening"intojthefhre-,box-l E, to which-fuel maylfbeapplied through a door Eofusualconstru'ction; 'l 'At the `rear or highest "point thecircular.flue D 'communicatesfwith an uptake G`Whichup take G in turn opens intoanguppe'r l`circular space' orchambervlL,exte'nd'ingjabove lthe y c lhearth Band bakingchamber,'and yis pref-4 erably inclneddownwa-rdlytoward-thefront r off the oven, the inclination offsaid iues or ychambers D andi H -beingpreferably approximately at the same Aan,'f.r,le as the inclination ofgthe hearth itself?.` theifrontor lowestportion'of `the upper, circular `:chamber -Ha .communication isfmadewith afstack or vofftakel, in `which .asuiDablefdamper-rl may be.located for controlling-thefdraft through the l p' ilue and around thebake-chamber. ,1

.e `In'the Vconstruction .of4 hefoven the ceiling or :top of the'bake-chamber `may be formed bysuitable masonry or metalstruts withoverklying masonry, and )the sp'aces'aboife said chamber, as Well asbelow ythe lueD, are'preferably lled in withzsand orvotherv non-corr-`ducting materiahwhe'rebyjtheheat Lis' pre-` f VVented fromradiatingoutwardly.

` In constructingthelhearth the centralhub ,B is preferably formed witha' bearig-iiange vided Withfa serie'sfo` apertures `through which theinn-ervend's oflfbeams B4 y,mayfbe passed. Said beams are held by boltsB5, which extend down between the beams and through a flange in the hub,while the upper ends of said bolts pass through plates B, which overliethe inner ends of the beams. As thus constructed the hub is providedwith a series of radial arms,and these radial arms are adapted for thesupport of slabs of soapstone, which bridge the space between said armsand rest at their edges on the flanges of the beams. Said slabs areindicated by the letter B and constitute the hearth proper of the oven.They maybe fastened in position by any suitable or ordinary fasteningmeans, but are preferably simply laid in place and retained againsttransverse movement by lugs K, attached to or formed on the outer endsof the arms. Any suitable driving mechanism may be employed for rotatingthe hearth; but in the preferred construction a circular rack L issecured to the under sides of the arms near their outer ends, and thepinion L', meshing with this rack and mounted on a shaft L2, extendsthrough the wall of the oven and is provided with any suitable drivingmechanism whereby the oven may be rotated. Obviouslya power mechanismmay be applied or a hand-wheel, such as indicated at L3, if no powermechanism be available or for any purpose is not desired.

The oven-door through which the bread is inserted and removed is locatedat the front or lowermost side of the bake-chamber, and it may be of theordinary tip-up variety, as indicated by the letter M, or of any otherpreferred type, that shown being preferred, however, for reasons whichwill now appear.

In baking Vienna bread, as is well known, the oven is filled with steam,and one of the objects of the inclined arrangement is to insure thesteam being retained in the oven, inasmuch as it will, owing to itsheat, tend to rise away from the openings and remain in the upperportion of the oven, and, further `more, with such an arrangement whenthe baker opens the door to insert or remove bread the liability of arush of steam into his face taking place is largely avoided. lVith atip-up door it is obvious that the opening is formed at the lowest pointfirst, and hence the bakeris able to control the escape of steam to avery large extent, as when it begins to escape too freely the height ot'the opening may be reduced, leaving only suiiicient space for theinsertion or removal of the bread.

In operation, the bread having been introduced and placed in position onthe hearth, the oven may be rotated so as to move the bread away from'the opening, presenting a new and clear space for the reception of morebread, and finally when the hearth is full it will usually be found thatthe loaves first'inserted have been baked and may be removed as theyreach the opening and fresh loaves inserted in their stead.

By the arrangement of ues below and above the hearth, but with the wallsof said above the top wall, an uptake connecting the highest point insaid iiue and chamber respectively, a stack leading from the lowestpoint in the circular chamber and a firefbox located at the lowest pointin the circular flue, of a central support around which said circularflue passes and an inclined circular rotary hearth mounted on saidsupport in the bake-chamber, the inclination of said hearth being substantially coincident With the inclination of the top and bottom wallsof the bake-chamber and means for rotating said hearth extending outthrough the walls of the oven; substantially as described.

2. In a bake-oven, the combination with an inclined fiat rotary hearthmounted on a central support to rotate in an inclined plane, of aninclined circular flue underlying said hearth, a circular chamberoverlying said hearth, an uptake connecting said flue and chamber and avalved exit leading from said chamber to the smoke-stack; substantiallyas described.

3. A bake-oven embodying the following construction, to wit, a circularexterior wall, a central circular bake-chamber formed by inclined topand bottom walls, said bottom' wall constituting an arch for an inclined`flue l and said top wall constituting the floor of an inclinedunobstructed chamber overlying the bake-chamber, a top wall for saidoverlying chamber, an uptake connecting the highest point in theinclined flue and overlying chamber respectively, a fire-box at thelowest point in the line, a smoke-exit at the lowest point in theoverlying chamber, a fiat rotary hearth mounted on inclined bearings inthe bakechamber and an entrance-door to said bakechamber located at thelower front side thereof; substantially as described.

4. In an oven, the combination with the oven-wall having a circularbake-chamber within the same, a circular flue arranged beneath saidchamber, a fire-box at one side of said circular Iiue, an uptake at theopposite side thereof, a circular chamber overlying the circularbake-chamber and with which said uptake communicates and asmoke-stackcommunicating with said circular chamber at a point opposite the uptake,an inclined circular rotary hearth mounted in the bakechamber and meansfor rotating said hearth extending through the wall of the oven;substantially as described; f

IOO

IIO

5. Ina bake-oven, va flat Arotary hearth formed with a'eentralhub havinga bearingflange and a central cylindrical-portion pro-I vided withapertures, I`bea1ns passing 5 through said apertures, a auge ontheinside thi'ough'thel platesan'd flange on the inside v of the hub,`and slabs mounted on they beams;

substantially as described."y

,Y FRANK H. VAN HOUTEN.

Witnesses:

of the hub, plates overlying the'inner ends ALICE ML KEANE, ofthe'beams, bolts passing betv'veen the beams v J; E. VAN HOUTEN.

